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PIMSO 2022 - Science - Grade 1 - National Round

Question 1

A marine scientist is scuba-diving along the Tubbataha reef to survey the animal population. Which of the following animals did the scientist count as a fish?
  1. Sea horse
  2. Starfish
  3. Coral
  4. Jellyfish
  5. Turtle

Question 2

Animals have adapted different ways to move from one place to another. Which animal is incorrectly paired with its movement?
  1. Whale shark: swimming
  2. Water buffalo: walking
  3. Cobra: crawling
  4. Flying lemur: flying
  5. Tarsier: climbing

Question 3

Filipino cuisine utilizes an array of spices which are derived from plants. Which of the following spices comes from a fruit?

Source: https://commons.wikimedia.org/
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Question 4

Trace the flow of food in the taro plant as it is produced by photosynthesis.

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Editorial terminology note: in these choices, “Stem” denotes the leaf stalk and “Trunk” denotes the main underground stem. These are approximate source labels; taro has no woody trunk.

Source: https://plants.ifas.ufl.edu/plant-directory/colocasia-esculenta/
  1. Root → Stem → Trunk → Leaf
  2. Root → Trunk → Stem → Leaf
  3. Leaf → Stem → Trunk → Root
  4. Leaf → Trunk → Stem → Root
  5. Stem → Trunk → Root → Leaf

Question 5

Which of the following food aids in the formation and maintenance of bone and teeth?
  1. Rice
  2. Potato
  3. Pineapple
  4. Tomato
  5. Bok choy

Question 6

The COVID-19 disease is caused by the infection of a virus that is not visible with the naked eye. Where would the virus most likely enter the body?

Editorial review note: explain possible entry routes and whether the wording identifies one unique choice.

A. Eye
B. Nose
C. Ear
D. Mouth
E. Skin

Question 7

You poured cold water in a glass and put it out of the balcony on a humid summer day. After some time, you noticed that the water level lowered and some drops appeared on the sides of the glass. Which of the following best explains the lowering of the level of water?

Question illustration

Image: Theo7705, own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=48913057
  1. Some of the water was absorbed by the glass
  2. Some of the water was absorbed by the glass and went to the outer side
  3. Some water evaporated
  4. Some water vapor condensed on the sides of the glass
  5. None of the above

Question 8

Which of the following is in the gaseous state?
  1. tire of a bicycle
  2. steam
  3. soft drink with bubbles
  4. stream of water
  5. boiling water

Question 9

Consider two completely identical containers, of the same, size, shape, volume and weight. One is filled with sugar, the other is filled with salt. Both were completely filled up to the brim and closed. Then, their weights were measured and the one containing salt was found to be heavier. The different substances inside the container have the same _____.
  1. Mass
  2. Amount of material
  3. Volume
  4. Taste
  5. Properties

Question 10

One way to take care of the environment is to segregate biodegradable from non-biodegradable waste. Which of the following is non-biodegradable?
  1. silver spoon
  2. toothpick
  3. cabbage
  4. leftover rice
  5. none of the above

Question 11

Which of the following properties of matter is NOT quantitative?
  1. mass
  2. volume
  3. boiling point
  4. color
  5. None of the above

Question 12

When you want to pop a balloon at a party, you may sit on it. The volume of air inside the balloon decreases just before it explodes. This is because air is a gas that can change their volume. This illustrates what property of gasses?

Question illustration

Image: Pipirafa, own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=74475513
  1. malleability
  2. compressibility
  3. expansion
  4. explodability
  5. flammability

Question 13

A container ship left Manila bay at 5:00 am. The following graph shows the distance it traveled over time. When is the ship NOT moving?

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  1. From 7:00 am onwards
  2. From 6:00 am to 12:00 noon and 11:00 am to 1:00 pm
  3. From 7:00 am to 11:00 am
  4. From 7:00 to 11:00 and 12 noon to 2:00 pm
  5. From 12 noon to 2:00 pm

Question 14

Which of the following decreases the amount of force on an object being pushed on a surface?

Editorial meaning: interpret “decreases the amount of force” as reducing the net force in the direction of the push while the object slides.
  1. Friction
  2. Gravity
  3. Normal force
  4. Magnetic force
  5. Pulling force

Question 15

An electric car like the one shown below is the same as any car. It moves like any other car and it has the same functions. It has light, sound system, air conditioning. There is only one difference: it moves by using electric motors powered by batteries. In this car, the electrical energy is used and converted to different forms of energy EXCEPT what?

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Editorial scope: consider the battery supplying the stated devices during ordinary operation, not charging or regenerative braking.

Image: Mariordo (Mario Roberto Durán Ortiz), own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=101564087
  1. Mechanical energy
  2. Light
  3. Chemical energy
  4. Sound
  5. Heat

Question 16

Which of the following explains how you can see black color on this ball?

Question illustration

Image: Shiv Shankar Menon Palat, Pocketing the 8 ball, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=103503992
  1. The ball absorbs all colors and reflects back the black color to your eyes
  2. The ball absorbs all colors
  3. The ball reflects back the black color
  4. The ball reflects all colors
  5. None of the above

Question 17

A bicycle allows you to travel using less work. What kind of simple machine is it?

Question illustration

Image: GT1976, own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=70078677
  1. Lever
  2. Pulley
  3. Screw
  4. Inclined Plane
  5. Wheel and axle

Question 18

Give the correct reading of the thermometer shown below:

Question illustration

Image: Anonimski, own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=29726755
  1. 26 °C
  2. 23 °C
  3. 20 °C
  4. 30 °C
  5. 25 °C

Question 19

Mikey monitors the temperature throughout the day for one of his assignments. At 8:00 am, he recorded a temperature of 23°C. It was 25°C at 12 nn, 26.5°C at 3 pm, and 21.5°C at 6:30 pm. What can Mikey conclude from his data within the time he covered?
  1. It was the hottest at noon.
  2. It was the coolest at 8 am.
  3. It was warmer at 6:30 pm than at 8 am.
  4. It was the coolest at 6:30 pm.
  5. It was less warm at 3 pm than at 12 nn.

Question 20

Given the scenario in #19, if you step outside under the sunlight, which time of the day will your shadow be the longest?

Question 19 data: 8 am: 23 °C; noon: 25 °C; 3 pm: 26.5 °C; 6:30 pm: 21.5 °C.

Editorial assumption: all listed times still have direct sunlight, including 6:30 pm; use the usual daytime solar path.
  1. 12 nn
  2. 3 pm
  3. 6:30 pm
  4. Your shadow will remain at the same length all throughout the day
  5. No shadow will be formed